They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎
以砂
为主，其中又以石英砂和砂为主，缺少长石砂。
砂They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎以砂为主，其中又以石英砂和砂为主，缺少长石砂。
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